Apparatus for hydrating lime.



PATENTED PEB. 26, 1,907..

W. s. OSBGRE. l APPARATUS POR HYDRATING LIME.

APPLIGATION FILED MAR.2,1905.

3 SHEETS-SHEET l.

STEAM SUPQLV PATENTBD FEB. 26, 190V W. s.l0sBoRNE. APPARATUS POR HYDRATING LIME.

APYLICATION FILED MAB.2. 1905.

3 SHEETS-SHEET 2.

STEAM suPvLy l Y* Vl L P P U S M A E T S PATENTED FEB. 26, 1907.

W. S. OSBORNE. APPARATUS FOR HYDRATING LIME.

APPLIGATION FILD MAR.2,1905.

3 SHEETS-SHEET 3.

oooooooo'n eoooooooo u f5 finely pu UNITED sTATEs PATENT OFFICE.' WILLIAM s. osBoRlili-br MARIETTA, rENNsYLvANIA.

i APPARATUS FR` l'l-JDRATl-NG LIM-IE. v

No. A845,189.

Specification of Letters Patent.

Patented Feb. 26, 1907.

Application filed Marph, 1905. Serial No. 248.096.

To dll whom, it may concern:

Be it known that I, WILLIAM S. OsBoaN,

paratus-for Hydrating Lime, of which' the following is a specification.`

This invention relates to improvements in ro apparatus for hydrating lime; and the object of my invention is to provide an eiiective-apf vparatus .for economically carrying outthe l process of hydration.

In its referable embodiment the lime is l)v erized and after having the tailings separated the pulverized material is led into -a suspension-chamber together with .a jet of steam and While in suspension the-lime receives moisture for hydration and settles zo by gravity into mixing-vats while the air is withdrawn in any suitable manner.

With this eneral statement my invention consists in t e' ap aratus, as illustrated, in what I now. consi' er its preferable embodi- 2 5 ment in the accompanying drawings and as will now be hereinafter described and` definitely claimed.

In the drawings, which aecompan vand form art of this a plication, and Whic as I 3o have before state illustrate ,the preferable though not necessary embodiment of my in- Vention, Figure 1 is a sectional view of my apparatus. Fig. 2 is a top plan view of the mixing-vets andtheir plovvs. Fig. 3 is an 3 5 end view of the apparatus, and Figs. 4 and 5 are details of the suspension-chamber and the pipes leading tliereinto.

n Referring now to the details ofthe draw-v ings by numerals, 1 designates a crushing or 4o pu verizing mill, which may be-of any desired o rapproved form, from the outlet of which leads a conducting-pipe 3, which leads to a separator 5 a11d is arran edwhen the mai terial is drawn through it y the suction ofl a 45 fan, as hereinafter described, to separate the V'materiah so as to deliver the pulverizedvparticles to `the outlet 7, while the tailings or heavier or lar er'particles descend'by gravity through a tai ings-spout 9, leading into the 5o inlet 11 of the mill 1.' The ,separator' maybe of any-desired construction; but I prefer to use one similar to those shown 1n my Patents Nos. 710,602, 710,604, and-710,605. In`

fact, all of thea.J parts may be of any ordinary i' 55 construction, and my present inventiondoes t notreside'specically 'inany one of them, but' '.order that my they. are each shownin conventional form in fully described.V

Secured on a .suitable latfiorm 13 at an complete apparatus may be' appropriate height from t e main iioor is a suction-fan 15 with its `driving-shaft 16 and." ulley 17, to which power islapplied from any connected to the outlet 7 of the se arator and owing to the suction caused E inely-pulverized-lime is drawn from t e separator and propelled' through the conduit' or esired or' convenient source. 'Thefan 1,5 is

it the conductor 19,y Which leads the particles of4 lime into a settling or suspensionchamber orl receptacle 20 of suitable andl appro riate size. riljis settling-chamber is provide '.With a vclosed top having a Ventilating-stack 22, leading through the roof of the structure in which the plant is located, and the lower end of .the said chamber is formed into a conical delivery-spout 24 of relatively sniall size.

The delivery end of the enduit or conductor 19` leads into the settling-chamber 2() at a tangent, so that the iinely-pulverized Inaterial is caused to ,travel around the said chamber and is thus held in astate of suspension before it falls by gravity through the delivery-spout 24.

In order to perfectly meisten the line While itis thus in-suspension, a source of steam (exhaust-steam mayzreadixy and economically be' employed) is led into the conductingpipe just where itA enters the settling-chamber, and the pulverized lime is therefore driven into -the chamber 2O with exhaust-` steam, 'and ,as the lime and steam pass around the. suspension-chamber. the lime absorbs the steam and is thus moistened. The moistened' material 'then descends by gravity, "and the air entering the chamber With the lime escapes through the stack 22.

" In order that there may be sufficient moisture-for complete hydration, I also employa Wat -spray l26, su plied from any suitable sourc and when't e steam does not contain sulicieintpmoisturthe Water-spray may be used to su ply the deficiency, so as to comletely ang effeetually moistenithe lime for ydration. As the moistened material descends in the settling-chamber it passes out through its spout 24 into mixing-vets, in which it is thoroughly mixed While hydrating,

and as soon ,as the .lime is completely hydrated .it overflows into the storage-vats,-

from whence it may be placed in suitable.;

-packagesf-such as bagshiefready for ships' IOO Ano'

nient; These miXing-vats are designated and-'31 and are located in a large aperture' formed in the latform 13, hereinbefore mentioned-,rand t e central vat 30 is of course :directly under the outlet-of the settlingvat- Slis provided with a -langed circular track 43,3, which runs on these rollers. The

.outer vat 31is. also provided with a toothed rim 39,v with-fwhich meshes a gear-wheell 40 on a shaft' 41.,. supported in a suitable bearing 45, resting' en ,the platform 13,- the shaft be- =ing.p`rovidedwith. a pulley 43, .to which power. may be applied... It l will be manifest that when `theshat't is rotated the gear-wheel' 40, Ineshing with the lcircular-rack 39, rotates both ofthe vats, which rotation is 'ermitted,- owing to the -fact -that the circular track'of thevats rests on` the rollers 38., as described.

-ping into the vatsV may b'e properly mixed In order that the moistened. material dropand hydrated, it is of course'. necessary to agitata/the material, and this is -accoxnf' plishedas follows: A suitablefranie' is made of two ieces of' angle-iron 48 and 49 of substantially V shape and these are connected together by means of two vstrips 51 and 52, also 'of angle-iron, and the w ole is rinly rivetedto'gether, as shown in Fig. 2, forming .a frame substantially X shape, with a rectangular. opening 53 inthe center. This open- -mg coincides with the lower end ofthe deliv- `ery- 'out 24, and hence-the -nioistened materia'is delivered from said spout through' said opening 53 into the center vat. The' outer ends ofthe X-ishaped'frame are each' bent downwardly, as seen 'best at 56 in Fig. V1, and are thus supportedon the platform 13. Fron'ithe foregoing it will be evident that While the v-ats rotate, as 'before described, this frame isStatiOnary, and' in order to agitate thematerial vertical plows are secured to each arm'iof 'the X-shaped .trame and project downwardinto the vats, so that as the vats are rotated the materialis thoroughly mixed.l The large receiving-hopper 35, which has been described as underneath the vats and' as receiving th'e materiali'romvats'; is provided with-a contracted lower discharge 6 2, whichl conducts the material to' the 'divided chutes ..64 'and 65,.which: are provided with the valves or gates. 67 and 68, and '.'these chutes. lead the .material into .the lower coolyiraqi-vets or storage-bins 70 and `-71,"` from.

.which it may be withdrawn into 'suitable vsacks or barrels, as thecase may require.l .v

wit .i this'ar- .l ill understand my' invention.'

It will therefore be suiiicientv to concisely state the operation as follows Fresh -.-burnt lime is delivered to the mill through the inlet-hopper 11 and is inelypulverized by the mill.- Itis then drawn by the suetion'o the fan' 15 up throughthe'conductor'br pipe '3 into the separator, where the' material is separated, and the inely-pulverized material' passes through the fan, Whilejtheftailings 7 pass through the tailings-spout 9back to the.

The pulverized material after leaving .j

the fan 15 is blown into'the. suspensionchamber 20 with exhaust-steam,.the material 'and steam entering. said chamber at atanmeantime' passing out of the vsuspensionchamber through the stack 22. .The mate-l lrial passes from the suspension-chamber, and,

dropping through the rectangular Vopening 53 inthe x-'shaped frame supporting .the

plows 60, falls into rotary 'vat N o. 30.' Asv this va't rotates the plows agitato `the material, and as the material jslak'es' andexpands it overflows the walls of vatBO into` thesurrounding vat 31, andas this vat also rotates the material is likewise agitated there, and

inally'overllows the outside .Walls ofv'at'j31 i and falls' into the receiving-,hopper 35;- From the lower end of this hopper thematerial passes through eitherof the chutes 655011.66, i

into the cooling-vata or storagesbins, from which 4it is withdrawn. as desired intosacks or barrels. The divided chutes- 64 and 6.5,' with their valves or gates, makeit possible to firstload one oi the cooling-vats'or storag bins, and While the material is cooling there the material may be' directed into the other bin in a manner Well understood. As'these cooling-bins are covered, the `only communiyas the attendantl desires, .andvfrom thencev IOS cation at the top being through the 4'divided v chutes, the lime is delivered to the storagebins-Without the chance of air gettf -to it, and thus the lime is prevented from a 'sorb- -ing carbonio-acid gas before-being' .packed-x..

into the barrels or sacks.

.I am aware that it has .heret'oforelbeen-'l proposed to treat lime by applyingwater and stirringv itand do not claim this, broadly; yet fit is `obvi o us,th at mod ilications 'and 'changes may be'ma 'e '-in my apparatuswithout departingirom the spirit of my-inven- -ti'on, the -scopeof which is setforth by the following claims,

1. In apparatus of the character describedL the combination olf means -fo'r moistening lime, a rotatable-vat'into Which-'the 'meistenmeans discharge,` and plows or agitators hydratedhsubstantiallyas described` i tially as described.'

'point above its bottom, means for delivering for mixing the material in the vat while it is 2. Apparatus of the character described, having, in combination, a vplurality of vats arranged to overfiow one into another at a oint above thebottom thereof, and means or stirring the material in thevats, substan- 3. Apparatus of the character described, having,` 1n combination, a plurality of vats, one of which is arranged to overflow into another at a pointabove the bottom thereof, means for delivering moistened lime in a constant stream to the first' of said vats', and means for mixing the material in the vats, substantially as described.

4. Apparatus o f the character described, having, in combination, two adjacent vats separated by an intervening partition so that one overflows into the other, means for delivering lime into the first vat, and means for stirring the li me in the vats, whereby the pits and unhydrated particles settle to the, bot-- tom while the powdery hydrated matter overflows one of said vats into the other, substantially as described. Y

5. Apparatus of the' character described, having, '1n combination, two concentric rotating vats, 'of which the inner vat is arranged to overflow intothe outer vat at a me' to the inner' vat, and fixed means Afor stirring the lime in the vats, substantiallyr as described.`

Apparatus of the character described, having, m cc nbination, a mixing-vat, means for delivering lime to the vat, means for stirring the li :ne in the vat, whereby the pits and l unhydrated matter settle while the powdery hydrated li 'ne overflows the sides of said vat, and a receiving-hopper faceted beneath. thej vat so as to receive the hydrated lime overflowing the sides of the vat, substantially as l described.

7. In apparatus of the character described;

\ l 4the combination of a vat, means for mixing li material therein and for causing it to overflow said vat, a receiving-hopper arranged to receive the discharge from said vats` coolingvats arranged to receive the material from 5o said receiving-hopper, and means f'or controlling the discharge from the receiving-hopper into the cooling-vat, substantially as described.

8. In apparatus of the characterdescribed; 5 5

the combination of a vat, means for mixing material vtherein and for causing it to overfiow said vat, a receiving-hopper arranged to receive the discharge from said vat, coolingvats closed from the atmosphere arranged to 6c receive the material from said receiving-hoper, and means for controlling the discharge om the receiving-hopper into the cooling-- vais, substantially as: eseribed.

9. In apparatus of the character described.;

the combination of a mixing device, means for causing the material therein to overflow,

a receiving-hopper receiving theV material from said device, cooling-vets arranged to receive the material from said receiving-hopper, and divided chutes with valves controling the delivery of material from the receiving-hop er to the cooling-vats, 'whereby the materia may be fed into one of thccoolingvats while the material is cooling in the" ythcr, substantiallyas described.

10. In apparatus of the character described,- Aa settling-chamber having a discharge-spout, a mixing-vat .located under said spout.- a frame suitably supported and interposed between said spout and said vat, said frame being formed of two V-shaped angle-irons connected together and forming an' X-shaped frainewith`an o ening through which the material passes, p ows projecting tro-.n said X-shaped trame into the'v'at, and

g means for rotating said vat whereby the inaterial is mixed, substantially as described.

Signed by me at Marietta, Pennsylvania.

this 3d day of October, 1904-.

' VVILLIAMMS. OSBORNE.

Witnesses:

G. W. OsoaNn, H. REA Enorm. 

